Section 4 (2-4) Monitoring Faults

Vocabulary

Outline

Devices that Monitor Faults

• Geologist use instruments to record the movement.
• Creep meters
  • Creep meter uses wire and weight to measure the fault movement.
• Laser- Ranging Device
  • Laser- ranging device can record tiny fault movements.
• Tilt meters
  • Tilt meters uses liquid to measure if the ground is tilting.
• Satellite monitors
  • satellite monitors sends radio waves and records how much time did it get to bouncing.

Monitoring Risk in the United States

• Geologists can not predict when and where the earthquake strikes.
  • Earthquake is likely to occur near the fault.
  • Almost all part of the United States had earthquakes.

Diagram of laser-ranging device